<template>
    <HomePanel title="热门品牌" sub-title="国际经典 品质保证">
        <template #right>
            <a @click="toggle(-1)"
               :class="{ disabled:index === 0 }"
               href="javascript:"
               class="iconfont icon-angle-left prev"></a>
            <a @click="toggle(1)"
               :class="{ disabled:index === 1 }"
               href="javascript:"
               class="iconfont icon-angle-right next"></a>
        </template>
        <div class="box" ref="target">
           <Transition name="fade">
               <ul class="list"  v-if="brands.length" :style="{ transform:`translateX(${-index*1240}px)`}">
                   <li v-for="item in brands" :key="item.id">
                       <RouterLink to="/">
                           <img :src="item.picture" alt="">
                       </RouterLink>
                   </li>
               </ul>
               <div v-else class="skeleton">
                   <XtxSkeleton
                       class="item"
                       v-for="i in 5"
                       :key="i"
                       animated
                       bg="#e4e4e4"
                       width="240px"
                       height="305px"
                   ></XtxSkeleton>
               </div>
           </Transition>
        </div>
    </HomePanel>
</template>

<script setup>
import { ref } from 'vue'
import { findBrand } from '@/api/home'
import { useLazyData } from '@/hooks'
import HomePanel from "@/views/home/components/home-panel.vue";
import XtxSkeleton from "@/components/library/xtx-skeleton.vue";

// 获取数据
// 注意：useLazyData需要的是API函数，如果遇到要传参的情况，自己写函数在函数中调用API
const { target, res } = useLazyData(() => findBrand(10))
const brands = res

// 切换效果，前提只有 0 1两页
const index = ref(0)
// 1. 点击上一页
// 2. 点击下一页
const toggle = (step) => {
    const newIndex = index.value + step
    if (newIndex < 0 || newIndex > 1) return
    index.value = newIndex
}
</script>

<style scoped lang="less">
@import "@/assets/styles/variables";
.home-panel {
  background:#f5f5f5
}
.iconfont {
  width: 20px;
  height: 20px;
  background: #ccc;
  color: #fff;
  display: inline-block;
  text-align: center;
  margin-left: 5px;
  background: @xtxColor;
  &::before {
    font-size: 12px;
    position: relative;
    top: -2px
  }
  &.disabled {
    background: #ccc;
    cursor: not-allowed;
  }
}
.box {
  display: flex;
  width: 100%;
  height: 345px;
  overflow: hidden;
  padding-bottom: 40px;
  .list {
    width: 200%;
    display: flex;
    transition: all 1s;
    li {
      margin-right: 10px;
      width: 240px;
      &:nth-child(5n) {
        margin-right: 0;
      }
      img {
        width: 240px;
        height: 305px;
      }
    }
  }
}

.skeleton {
    width: 100%;
    display: flex;
    .item {
        margin-right: 10px;
        &:nth-child(5n) {
            margin-right: 0;
        }
    }
}
</style>